[Hygienic importance of carbon dioxide in the air of the subways in the USSR].
D000393:Air Pollutants / Q000032:analysis*; D002245:Carbon Dioxide / Q000032:analysis*; D008452:Maximum Allowable Concentration; D011890:Railroads; D014586:USSR
D000393:Air Pollutants; D002245:Carbon Dioxide
Gigienicheskoe znachenie uglekisloty v vozdukhe metropolitenov strany.